Snap coupled index card retainer for telephones



June 20, 1950 M. B. DISKEN 2,512,457

SNAP COUPLED INDEX CARD RETAINER FOR TELEPHONES Filed S t. 5, 1946 NA8-8070 A23 4567 INVEN TOR. MART/N 5 DASAE'N (ilk/Q w m.)

A 7'70E/VEY Patented June 20, 1950 SNAP COUPL'ED INDEX CARI RETAINER-FOR TELEPHONES Martin B. Disken, Brooklyn; N. Y. Application September5, 1946; Serial No. 694390 zp'laims. (o1. 4010.5-),

This invention relates to an improveddevicefor enabling a person toproperly dial an automatic telephone connection, by the use of apreviously prepared or printed index card, and embraces certainimprovements over the construction previously patented by me in UnitedStates Patent 2,390,357, issued December 4, 1945.

One of the objects of the present invention is to provide a detachablespring snap coupling between the index card retaining sleeve or frameandthe rotary dial frame having a central boss or'hub of the dialtelephone, so that the holding frame may be mounted in place and willretain its position without difficulty; and-may be held firmly in placein its proper'position against accidental displacement, if desired, bydeflecting spring retaining flanges or lugs.

With the above and other objects in View the invention comprises certainnew and useful constructions, combinations and arrangements of parts,clearly described in the following specification, and fully illustratedin the drawings, in which:

Fig. 1 is a top plan view showing the device attached to the dial frameof a dial telephone.

Fig. 2 is a sectional view taken on line 2-2 of Fig. 1, looking in thedirection of the arrows, of the device mounted on the telephone, and thelatter being shown in an objective view.

Fig. 3 is a detail perspective view of the removable index card or disc.

Fig. 4 is a perspective view of the attachable holding sleeve or frame.

Fig. 5 is a top plan view of the index card or disc.

Fig. 6 is a top plan view of the holding sleeve or frame.

Referring to the drawings, which illustrate the practical embodiment ofthe invention, 5 designates a rotary telephone dial frame, having aseries of radial holes or apertures 6 which register with the successivealphabetic and numbered groups of calling symbol letters or numbers 1,printed on a card which is fixed to the base 8 of the automatictelephone set, and readable through the apertures or holes 6, which aredesigned to receive the finger of the user, or a pencil or rod forsuccessive position operation of the dial frame 5. A finger or otherstop 9 is attached to the base for limiting the usual turning orswinging motion of the dial frame. All of these parts are well known.

The dial frame 5 is provided, in accordance with the usual practice,with a central upstanding cir- Ill circular row of operating aperturesor holes 6.

On the concentric hub or boss I0 thereis mounted a circular sleeve ll.

i2- and it on the front side of the sleeve and with holding lugs l4 andI5 on the back side ofthe sleeve. The lugs I2 and [3 are spaced apartandtwo of the warmest holes of the operating dial frameorring 5.

Each of the lugs is formedwith: a radial portion l6, which forms a seatto engage the: upper-surface of the dial frame or ring 5, and with aterminal spring'finger H, which isslightly cnrvediin- \vardly so that itwill have a spring snap fit against the inner edge of the aperture orhole engaged by the lug or spring finger. This spring finger is slightlyU-shaped at Ila so that it can be held by slight pressure of the fingersagainst the inner edge of the engaged aperture or hole and inward- 1ythereof, and will springinto latching relation with the edge of theengaged aperture or hole, thereby latching the holding sleeve II inplace on the central boss or hub l0.

, The sleeve H is formed with a notch l8, which is located near thefinger stop 9. This notch allows the finger hold lug or tab IQ of theremovable circular index card or disc 20 to project outwardly of thesleeve, so the index card or disc 20 may be easily removed from thesleeve.

The index card or sleeve is printed or otherwise provided with the keycalling information for any telephone connection which the customerdesires to establish communication with. This information may includethe name of the person or concern to be called, the call letters of thecentral office and figures or numbers constituting the charactersidentifying his station. Below these characters are identifying numeralssequentially numbering the respective characters from left to right inthe order of dialing. This data may be printed or otherwise provided onone side of the card or disc 20, and on the other side a series ofsegmental divisions 2| are provided, in the same manner and for the samepurpose as disclosed in my Patent No. 2,390,357, which segmentaldivisions 2| correspond in number to and disposed to assume radialregistry with the dial character exposing aperture 6 when the card 20 isproperly seated with the tab l9 protruding through the holder notch l8.In the segmental divisions 2| of the centrally disposed card 20,corresponding to the respective characters identified thereby are theidentifying 1111- This sleeve is formed with struck out or integralholding lugs inerals indicating the sequence in which wheel is turnedfrom its normal position to the finger stop 9 for each designatedaperture, as in the usual dialing operation. The sleeve H is alsoprovided with a location lug 22 near the tab rethe holding sleeve andthen operating the dial frame or ring in accordance with the callinggroup of numbers printed or lettered in the segmental spaces, therequired telephone connection can be quickly made.

The sleeve H can easily be detached from the frame by using a properpulling force, thereby disengaging the spring fingers I! from theapertures of the frame 5,

fThe improvement provides a latching connection between the holdingsleeve and the hub or boss of the dial frame or ring, which willeffectively prevent the accidental displacement of the sleeve from thetelephone, and the notch l8 in the sleeve H also serves to positivelylocate the sleeve index c'ard'or-disc, sothat its calling positions willbe properly aligned with the calling apertures or'holesof the dialframe.

It is understoodthat various changes in the detail'constructions of thedevice may be made in carrying out the invention, as-defined'by theclaims herein' set forth.

I'claim'as new and patentable:

l. In adevice oi the character described the combination which comprisesa cylindrical sleeve,

4 said sleeve being adapted to engage the central boss of a dialtelephone and said boss holding a card bearing indicia denoting theoperative sequence of actuating apertures of the dialing wheel of saidtelephone for calling a station, means for preventing rotation of thecard within the sleeve and, means on said sleeve to determine therelative angular position of the sleeve with respect to said boss, aseat integrally disposed at the bottom of the sleeve, a plurality oflugs, integrally extending from the bottom of said sleeve throughcorresponding apertures of the dialing Wheel, thereby retaining thesleeve in predetermined position relative to the bars.

2. The device, as set forth in claim 1, in which the lugs extend firstin radial direction, thereby I forming the seat which engages the upperface of the dialing wheel which provides a support for the sleeve, thenare slightly inwardly curved to form a springsnap fit against the inneredge of the aperture of thedialing wheel.

MARTIN B. DISKEN.

' REFERENQES CITED The followingireferences are of record in the fileofthis patent:

UNITED STATES PATENTS

